File:Heinrich Rudolf Hertz.jpg

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Description

This is Heinrich Rudolf Hertz, from Oliver Heaviside: Sage in Solitude ( ISBN 0-87942-238-6), p. 111. The image is reprinted courtesy of the Burndy Library (as stated in the credits in the back of the book, p. 318), but its age implies that it's public domain. (It must have been made in 1894 or earlier.) It was scanned on an Epson Perfection 1250 at 400dpi, cleaned up (some text was showing through the back) in Photoshop, reduced to grayscale, and saved as JPG using the 'Save for Web' optimizer.

Date

Photo first published 1894 at the latest

Source

This file is lacking source information.

Please edit this file's description and provide a source.

Author

Robert Krewaldt

Public domainPublic domainfalsefalse

This image (or other media file) is in the public domain because its copyright has expired.

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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

Public domainPublic domainfalsefalse

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1923.

Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.

File usage

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